Improvement in slotting and planing tools



JOHN C. CHAPMAN, OF PASSAIC, NEW JERSEY, ASSIGNOR TO NEW YORKSTEAM-ENGINE COMPANY, OF SAME PLACE.

IMPROVEMENT lN SLOTTING AND PLANING TOOLS.

Specification forming part of Letters Patent No. l, dated May 5. 1874;application filed April ll, 1874.

To all ywhom it may concern:

Be it known that I, JOHN C. CHAPMAN, ot' Passaic, in the county ofPassaic and State of New Jersey, have invented certain new and usefulImprovements in Tools for use in Slotting, Shaping, and PlaningMachines, of which the following is a specification:

The object of this invention .is to provide a tool-holder for use inslottin-g, shaping, and planing machines, by means of which the quantityand quality of work done on those machines may be improved.

In the drawings, Figure l is a front view of the tool-holder. Fig. 2 isavertical section at line x m,Fg.`1, and Fig. 3 is a plan of thetool-holder.

A is the tool-holder, having a longitudinal horizontal slot, B, andadjusting-screws C, one at each end of said slot passing through theends of theholder into the slot, and regulating the position of theblocks D D. The blocks D extend through slot B, and are formed withiianged heads, which take against the rear face of the holder A, as seenin Fig. 2. They have vertical openings or slots through them,

in which are placed the cutting tools E E. These tools may be ot' anyform most convenient for the work to nbe done, and are held in positionby the pinching-screws F F in the outer ends of the blocks, which pressthe tools against the front of holder A. The screws C C are iitted toeach end of piece A, and revolve freely in it, the piece A acting as abearing for the screws. The screws C C at one end are squared to receivea crank, by which they are operated, and have collars G Cr, to preventany lateral or end motion. The blocks D D are tapped or threaded, toreceive the screws C C, thus forming a nut, and by operating the screwsthe blocks D D, together with the tools E, may be moved toward.or fromeach other to any required position.

A tool thus made is useful in many ways as a means of increasing theamount of work a machine can do, and some kinds of work can be betterdone with a tool of this hind than by a single cutting-tool. Thistoolmay be used to an advantage on each of themachines hereinbeforenamed in nishing nuts, straps, and ends of connecting-rods, and manysmall narrow articles may be operated on and finished with this tool inhalf the time usually required for the same work.

What I claim as my invention is- The combination of the tool-holder A,screws C C, and blocks D D, arranged as described, and for the purposesset forth.

In testimony whereof I havehereunto signed my name this 20th day ofMarch, A. D. 1874..

JOHN C. CHAPMAN.

'ATENT OFFICE.

